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Climate and Average Weather Year Round in Rwanda Rwanda

The climate in Rwanda is warm and overcast. Over the course of the year, the temperature typically varies from 61°F to 82°F and is rarely below 58°F or above 87°F.

Based on the tourism score, the best time of year to visit Rwanda for warm-weather activities is from mid June to mid September.

Climate in Rwanda

warmJanFebMarAprMayJunJulAugSepOctNovDecNowNow57%57%19%19%overcastclearprecipitation: 5.6 inprecipitation: 5.6 in0.4 in0.4 inmuggy: 16%muggy: 16%0%0%drydrytourism score: 7.5tourism score: 7.55.05.0
Rwanda weather by month. Click on each chart for more information.

The temperature in Rwanda varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature in Rwanda

Average High and Low Temperature in RwandaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 680°FJul 680°FAug 2182°FAug 2182°F61°F61°F63°F63°FSep 2781°FSep 2781°FApr 679°FApr 679°FMay 2379°FMay 2379°F62°F62°F63°F63°F63°F63°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High81°F81°F80°F78°F78°F80°F81°F82°F82°F80°F78°F79°F
Temp.71°F71°F71°F70°F70°F71°F71°F72°F72°F70°F69°F70°F
Low62°F63°F63°F63°F63°F62°F61°F63°F63°F62°F62°F62°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Rwanda

Average Hourly Temperature in RwandaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcoolcomfortablecomfortablecomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Map
Marker
© Esri, et al.

Compare Rwanda to another city:

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In Rwanda, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Rwanda begins around June 5 and lasts for 3.6 months, ending around September 23.

The clearest month of the year in Rwanda is August, during which on average the sky is clear, mostly clear, or partly cloudy 55% of the time.

The cloudier part of the year begins around September 23 and lasts for 8.4 months, ending around June 5.

The cloudiest month of the year in Rwanda is April, during which on average the sky is overcast or mostly cloudy 80% of the time.

Cloud Cover Categories in Rwanda

Cloud Cover Categories in RwandaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1357%Aug 1357%Apr 1119%Apr 1119%Jun 538%Jun 538%Sep 2338%Sep 2338%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier78%78%79%80%70%57%46%45%59%74%77%75%
Clearer22%22%21%20%30%43%54%55%41%26%23%25%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Rwanda varies very significantly throughout the year.

The wetter season lasts 7.9 months, from September 27 to May 24, with a greater than 37% chance of a given day being a wet day. The month with the most wet days in Rwanda is April, with an average of 20.2 days with at least 0.04 inches of precipitation.

The drier season lasts 4.1 months, from May 24 to September 27. The month with the fewest wet days in Rwanda is July, with an average of 2.2 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Rwanda is April, with an average of 20.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 69% on April 19.

Daily Chance of Precipitation in Rwanda

Daily Chance of Precipitation in RwandawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Apr 1969%Apr 1969%Jul 55%Jul 55%Jan 135%Jan 135%Sep 2737%Sep 2737%May 2437%May 2437%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain10.1d10.0d16.6d20.2d14.0d3.4d2.2d5.4d9.7d14.9d17.1d13.4d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Rwanda experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Rwanda. The month with the most rain in Rwanda is April, with an average rainfall of 5.6 inches.

The month with the least rain in Rwanda is July, with an average rainfall of 0.5 inches.

Average Monthly Rainfall in Rwanda

Average Monthly Rainfall in RwandaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inApr 135.6 inApr 135.6 inJul 70.4 inJul 70.4 inNov 143.9 inNov 143.9 inJan 242.1 inJan 242.1 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall2.2″2.6″4.2″5.6″3.6″0.9″0.5″1.0″2.0″3.2″3.9″2.8″

The length of the day in Rwanda does not vary substantially over the course of the year, staying within 14 minutes of 12 hours throughout. In 2021, the shortest day is June 21, with 12 hours, 0 minutes of daylight; the longest day is December 21, with 12 hours, 14 minutes of daylight.

Hours of Daylight and Twilight in Rwanda

Hours of Daylight and Twilight in RwandaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 14 minDec 2112 hr, 14 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2012 hr, 0 minJun 2112 hr, 0 minJun 21daydaynightNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight12.2h12.2h12.1h12.1h12.0h12.0h12.0h12.1h12.1h12.2h12.2h12.2h

The earliest sunrise is at 5:37 AM on November 6, and the latest sunrise is 31 minutes later at 6:08 AM on February 16. The earliest sunset is at 5:49 PM on October 29, and the latest sunset is 31 minutes later at 6:19 PM on February 6.

Daylight saving time (DST) is not observed in Rwanda during 2021.

Sunrise & Sunset with Twilight in Rwanda

Sunrise & Sunset with Twilight in RwandaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 65:37 AMNov 65:37 AM6:19 PMFeb 66:19 PMFeb 6Oct 295:49 PMOct 295:49 PM6:08 AMFeb 166:08 AMFeb 16daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Rwanda

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Rwanda experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.4 months, from October 16 to May 29, during which time the comfort level is muggy, oppressive, or miserable at least 4% of the time. The month with the most muggy days in Rwanda is April, with 4.4 days that are muggy or worse.

The month with the fewest muggy days in Rwanda is July, with 0.0 days that are muggy or worse.

Humidity Comfort Levels in Rwanda

Humidity Comfort Levels in RwandamuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 200%Jul 200%Apr 2016%Apr 2016%Oct 164%Oct 164%May 294%May 294%muggymuggyhumidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days2.2d1.7d2.9d4.4d2.6d0.4d0.0d0.0d0.3d1.2d2.1d2.3d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Rwanda experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.7 months, from May 18 to November 10, with average wind speeds of more than 5.1 miles per hour. The windiest month of the year in Rwanda is August, with an average hourly wind speed of 5.8 miles per hour.

The calmer time of year lasts for 6.3 months, from November 10 to May 18. The calmest month of the year in Rwanda is February, with an average hourly wind speed of 4.4 miles per hour.

Average Wind Speed in Rwanda

Average Wind Speed in RwandawindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphSep 95.8 mphSep 95.8 mphFeb 214.3 mphFeb 214.3 mphMay 185.1 mphMay 185.1 mphNov 105.1 mphNov 105.1 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph)4.54.44.44.65.15.35.75.85.85.55.04.7

The predominant average hourly wind direction in Rwanda varies throughout the year.

The wind is most often from the south for 2.3 months, from June 2 to August 12, with a peak percentage of 60% on July 17. The wind is most often from the east for 9.7 months, from August 12 to June 2, with a peak percentage of 44% on January 1.

Wind Direction in Rwanda

Wind Direction in RwandaESEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is in Rwanda throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Rwanda for general outdoor tourist activities is from mid June to mid September, with a peak score in the third week of July.

Tourism Score in Rwanda

Tourism Score in Rwandabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.57.55.05.05.55.5NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Rwanda for hot-weather activities is from late June to early September, with a peak score in the second week of August.

Beach/Pool Score in Rwanda

Beach/Pool Score in Rwandabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.83.93.9NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Rwanda are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in Rwanda

Time Spent in Various Temperature Bands and the Growing Season in RwandaJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3NowNowcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days in Rwanda

Growing Degree Days in RwandaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°FJul 590°FJul 590°FAug 12900°FAug 12900°FSep 221,800°FSep 221,800°FJun 307,502°FJun 307,502°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.4 months, from July 3 to September 16, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Rwanda is August, with an average of 6.3 kWh.

The darker period of the year lasts for 1.4 months, from April 4 to May 16, with an average daily incident shortwave energy per square meter below 5.5 kWh. The darkest month of the year in Rwanda is April, with an average of 5.3 kWh.

Average Daily Incident Shortwave Solar Energy in Rwanda

Average Daily Incident Shortwave Solar Energy in RwandabrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAug 156.3 kWhAug 156.3 kWhMay 25.2 kWhMay 25.2 kWhJul 36.1 kWhJul 36.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh)5.85.95.85.35.55.96.26.36.15.65.45.6

For the purposes of this report, the geographical coordinates of Rwanda are -2.000 deg latitude, 30.000 deg longitude, and 0 ft elevation.

The topography within 2 miles of Rwanda is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Rwanda is covered by cropland (85%) and herbaceous vegetation (13%), within 10 miles by cropland (78%), and within 50 miles by cropland (72%).

This report illustrates the typical weather in Rwanda, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Kigali International Airport page.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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